Everything Linus produces just blows me a way. Especially loved his C64 organ [0] and also maybe the only "cool" NFT I've ever seen [1] (basically the source code for the demo is encoded in the token so it's on the blockchain forever instead of just being some link to an image hosted on some server that could disappear at any point.)
https://linusakesson.net/scene/a-mind-is-born/
That's in 256 bytes. Not kilobytes but bytes.